<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <script src="../jsLib/angular.js"></script>
    <script src="../js/从外部引入js.js"></script>
    <title></title>
</head>
<body>
<div ng-app="app" ng-controller="fun">
    <h3>{{out();}}</h3>

</div>
</body>
</html>